Summer, I applaud your tenacity with this! Keep on keeping on is what flushing is all about ... do it til you don't need to do it any more THEN do maintenance.
Question: have you tried putting the epsom salt in apple juice rather than water or in capsules like concerned aunt does?
"knows" that posts here on occasion is Dr Ken Sutter from the forum of same name. Docta Knows CURED liver cancer, so I'm really listening to what he has to say on flushing issues. One thing he did that makes total sense to me is: flush, deworm ... flush, deworm ... flush, deworm. He tells us that congestion protects the fluke stages and the flukes hold the congestion in place (protecting other generations?)
I thought I had my liver parasite free after having passed 2 quarts in one flush until i began my gentle flushing which includes a mild dose of dewormer for 2 out of every 3 weeks ... everytime I pass "old stones" I then pass flukes on the next flush. This month, I passed the largest fluke I have seen yet ... longer than my thumb and just as big around ... I'm hoping this was the mama!!!!